Further to the above, I've done a bit more digging. My grinder has a one-shot lubrication system, which I have yet to refill, so can't say what is required. Having said that, the Warco, and by implication your Targa grinder, is from the same mould as the USA Grizzly G5963 6×12 grinder. I have downloaded their manual, which is quite comprehensive and includes exploded parts drawings and that specifies ISO 68 oil for the one-shot oiling system. It also states that, apart from the obvious lubrication points, other moving parts are sealed units and need not be lubricated.
I have the pdf of the manual. If you want a copy, PM me your email address.
John
Edited By John Hinkley on 02/05/2022 13:22:00